main.css

*{
    margin: 0;
    padding: 0;
}

:root{
    --blue: #05659E;
    --yellow: #DBA531;
    --orange: #D85426;
    --cream: #E5E8C7;
    --dark: #43516C;
    --shadow: #43516C 1px 1px 5px;
}
body{
    font-family: Helvetica, sans-serif;
    background-color: var(--cream);
    color: rgba(0,0,0,0.8);
}

header{
    text-align: center;
    background-color: var(--blue);
    color: var(--cream);
    padding: 20px;
    box-shadow: var(--shadow);
}

header h1{
    font-size: 3.5em;
}

header h3{
    opacity: .85;
}
header h3::before{
    content: "";
    padding: 80px;
}

main{
    padding:50px;
}

main h1{
    text-align: center;
    padding-bottom: 40px;
}

.lists{
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
}

.card{
    margin :10px;
    min-width: 350px;
    max-width: 400px;
    height: 400px;
    position: relative;
    box-shadow: var(--shadow);
    overflow: hidden;
    background-position: center;
    background-size: cover;
    opacity: .8;
    transition: opacity .5s;
}

.card .heading{
    position: absolute;
    bottom: -60px;
    background-color: var(--orange);
    padding: 20px 0; 
    width:100%;
    text-align: center;
    transition: all .5s;
    opacity: 0;
    font-size: 1.5em;
    font-weight: 700;
}

.lists a, a:visited{
    text-decoration: none;
    color: var(--cream);
}

.lists a:hover .card{
    opacity : 1;
}


.card:hover .heading{
    bottom:0;
    opacity: 1;
}

#flappyBird{
    background-image: url(assets/flappyBird.png);
}

#carGame{
    background-image: url(assets/carGame.png);
}

#carGame2{
    background-image: url(assets/carGame2.png);
}

#spaceShooter{
    background-image: url(assets/spaceShooter.png);
}

#pingPong{
   background-image: url(assets/pingPong.png);
}

#snakeLadder{
    background-image: url(assets/snakeLadder.png);
}